one of the possible drawbacks for using a resistor instead of a choke is residual AC ripple on your rectified DC line. Using a choke tends to block AC ripple better.However, I build amps using both, either choke or resistor, and so far have not been able to hear any audible differences.I think that as long as good quality electro caps are used at the correct value/s for a given amp, a resistor instead of a choke should be just fine.It is said, but I have not experienced it, that a power supply using a choke has less hum and somewhat cleaner and better bass response.

I pulled the chokes out of one pr of my Mk3s.....put a new stock type chokes in a other pr of Mk3s.....I well never go back to a choke on my B+ in my tube amps. less it a 10h or higher.....call it more noise....what ever...now if I were driving klipsch ..have to get a small watt SE amp.....the tone is so much better.....with out these small chokes....the tube sound so diff....the new tube sound almost as NOS.....an I was a kt 88-100 guy....after pulling the chokes the 6550 is the best sounding tube I have ever heard.....the other kt type sound dark....less sweetnes......look it tock 40years for me to pull thses chokes....go fig...lot of great sounding Eico tube amps out there with out chokes..............all just one mans finding